Stop actuating mechanism for braiding machines



June 5, 1934.

F. MURRAY STOP ACTUATING MECHANISM FOR BRAIDING MACHINES Filed Jan. 20 19-32 2 Sheets-$heet l K M INVENTOR. F I: M a 1E 12 2y ran arr/7,

. ATTORNE June 5, 1934. F MURRAY 1,961,620-

STOP ACTUATING MECHANISM FOR BRAIDING MACHINES Filed Jan. 20, 1932 2 Sheets-Sheet 2 //w! .51 M 52 M 55E 1 l5 Q5 Q8\ 3 7 55% 5 55 INVENTOR.

ATTORNEYS.

Frank Murray Patented June 5, 1934 retreat STOP ACTUATING MECHANESM FOR BRAIDING MACHINES Frank Murray, Reading, Pa, assignor to The Narrow Fabric Ca, West Reading, Pa, a cor-. poraticn of Fennsylvania Application January 20, 1932, Serial No. 587,644

This invention relates to braiding machines and particularly to devices for actuating stopping mechanism therefor in the event of break age of an elastic thread, or other core, guided to the braiding point for incorporation in the braid.

In carrying out the invention a movable, hub is mounted on the spindle of eaehtravelling thread-carrier of the braiding machine and has lugs for actuating stop-mechanism. The lugs are normally held in inactive position by pns extending at the side of the spindle and. engag-' ing shoulders on the'hub. A wire norrn'ally supported by the elastic thread has a projecting portion adapted to be dropped into the path of the carrier to cause release of the hub from said pins: to permit its movement to'dispose its lugs imposition to operate the stop mechanism. A spring mounted on the'spindle engages the hub to insure that it ismoved quickly to stop operating position when released.

In one embodiment of the invention a pair of notches engage the pins projecting from the spindle to hold the hub in raised position and a second pair of notches are provided for engaging the pins to lock the hub when turned on the spindle to rotatively position its lugs for actuating the stop mechanism. Camming surfaces provided on the hub cooperate with the pins projecting from the spindle to turn the hub as it is moved axially of the spindle.

In the drawings:

Figure l is a front elevation, partly in section; of part of a braiding machine and shows a travelling thread-carrier provided with a movable hub operable by a thread supported wire to'eifect actuation of stop mechanism for causing stopping of the machine.

Figure 2 is a side elevation of a portion of the mechanism shown in Figure l.

40 Figures 3 and 4 are views, similar to Figures 1 and 2, illustrating another embodiment of the invention.

Referring to the drawings, the numeral 10 designates one of the various travelling thread- 3 Claims. (Cl. sis-4o '25 bent to the form of a crank and pivotally carriers with which abraiding machine is prodownward movement of the hub on spindle 16 to be positioned for engaging an operating lever 22 of any desirable form of stop mechanism as is usually provided for stopping braiding machines. As shown, lever 22 is fixed to a pin 19 rotatably mounted in bed 15 and an arm 29 alsofixed to the pin and movable with lever 22 operatively connected to set the stop mocha a in operation.

Hub 20 is normally held in raised position on spindle 16, with the lugs 21 above the plane of lever 22, by the projecting and offset end portions 2311f a member 24 which, in the embodi meat shown. in Figures 1 and2, comprises a pin 0. mounted intermediate its ends in an aperture in spindle l6. Aspring 26 surrounding spindle 16 between collar 17 and hub 20 urges the hub towards base plate 11 and alsocauses a flange or shoulder 27 on the hub to engage the end por- V tions 23 hub. I

A standard B-Ofixed on bed 15 between the s nuous grooves 14 supports a pulleySl which guides an elastic thread 32, or other core to be 0 incorporated in the braid, from a suitably located supply spool to the braiding point. Standard SOhas a bracket 33 and a hollow base portion 34 which form gudes for a Wire 35 having a loop 36 supporting it on thread 32. Wire 35 5 is reversely bent to provide a projecting portion 37 adapted to be dropped on breaking of thread 32 into the path of movement of a projecting end portion 23 of the members 24 mounted on the various thread-carriers 10 of the braiding machine.

When a thread 32 breaks and drops the related wire 35 the portion 37 thereof engaged by an 01 end portionv 23of the membi, L 24 on the first carrier 10 to reach the point at which a thread 32 has broken. Inasmuch as portion 3'7 of Wire 35 also engages the side of standard 30 it does not yield and as a result the end portions 23 of member 24 are rotated to the positionfshown in dotted lines in F e 2, thus releasing hub 20 and permitting spring 26 to move the hub quickly downwardly on spindle 16 so that the. lugs 21 are p0- sitionsd in the plane of lever On engagement of the leverby one of them lugs. -uponfurther travel of the carrier, it is operated to cause stopping ofthe braiding machine.

In the embodiment illustrated in Figures B and 4. the lower edge of the hub 40 is provided with diametrically located notches 41 of inverted V- T shapeproviding shoulders for engaging pins 42 m of the member 24 for supporting the turning and axial movements to aline and enextending from opposite sides of spindle 43. In this embodiment the spindle 43 is so shaped that hub may rotate thereon. Pins 4-2 are preferably square in cross section with their diagonals extending axially of the spindle and are adapted to seat in notches 41 to hold hub 40 in raised po sition against the force of a spring 44 so that lugs 45 on the hub are normally positioned above lever 46 operable thereby f or actuating suitable stop mechanism for the braiding machine.

Upon breakage of a core thread 4'7 which supports a wire 48 the projecting portion'50 of the wire is engaged by a projection 51 on the first travelling carrier to reach the point at which a thread has broken and the hub is turned to ro-- tate the lugs 45 into position for operating lever 46. The initial turning of the hub causes inclined edges of notches 41 to act as cams and raise the hub from pins 4;: so that it may be moved axially of the spindle to position the lugs 45 in the plane of lever 46. 1

Theiower edges of the hub are reversely cut from the outer edges of notches 41 to provide camming surfaces 52 adapt-ed to coact with the pins 42 to turn the hub when it is released from the holding action of pins'42. In the absence of spring 44 the hub would tend to gravitate downwe rdly on spindle 3 as wire portion and the camming surfaces 52 effected turning of the hub.

However. spring 44-acts to quickly move hub 40 towards the base 53 of the carrier and assures its gage other diametrically located notches 54 with pins 42. The notches 54 are also of inverted V- shape and are positioned above and angularly relatively to notches 41. Shoulders 55 are provided between the upper ends of camming surfaces 52 and notches 54 for lockingly engaging pins 42. Thus, the hub is held against further movement so that the lugs 45 are locked in their rotated position in the plane of lever 46 to insure engagement, on further travel of the carrier, of one of the lugs 45 with the lever for operating the latter to cause stopping of the braiding machine.

It should. be noted that the engagement of a projection 51 with wire portion 50 need rotate hub 40 only sufiiciently to raise notches 41 from pins 42 for releasing the hub from the holding action of the pins because thereafter the proper rotative and axial movements of the hub to dispose lugs 45 for operating lever 46 are assured by the action of spring 44.

What I claim is:

l. in a brai machine having a lever operable to actuate stop devices for the machine and a thread carrier provided with a spindle; a hub mounted for movement axially of said spindie and having lugs adapted to engage and operate said lever; a pivotally mounted member having a portion extending at the side of said spindle into engagement with said hub to hold the latter positioned for rendering said lugs ineflective to operate said lever; and thread-rele sed means for disengaging said hub and member to permit movement of said hub for disposing a lug thereof in position to operate said lever.

In a braiding machine having a member operable to actuate stop devices for-the machine and a thread carrier provided with a spindle; a hub slidably mounted on said spindle and having lugs adapted to engage and operate said member; a pivotally mounted pin having an offset portion extending from one side of said spindle into holding engagement with said hub to retain the lugs thereof from operative relation with said member; and thread-released means for engaging and pivotally moving said pin-from holding engagement with said hub.

3. In a braiding machine having amember op erable to actuate stop devices for the machine and a thread carrierprovided with a spindle;

hub mounted. for movement axially of said spindie and having lugs adapted to engage and operate said member; a pin pivotally mounted on said spindle and having offset end portions projecting from the side of said spindle intoholding enj gagementwith said hub to retain the lugs there of from operating relation with said member;'

thread-released means for engaging an offset end portion of said pin to pivotally move the latter from holding engagement with said hub; and a spring on said spindle engaging said hub to move the latter axially of said spindle for positioning the lugs thereof in position to operate said member.

- FRANK MURRAY. 

